Method and apparatus for transmitting and receiving time division duplex frame configuration information in wireless communication system
First Claim
1. A method comprising:
- transmitting configuration information including a period for downlink control information (DCI) including time division duplex (TDD) configuration information;
identifying a radio network temporary identifier (RNTI) for the TDD configuration information;
obtaining the DCI including the TDD configuration information, the TDD configuration information indicating a radio frame structure including a downlink subframe, an uplink subframe and a special subframe;
attaching a cyclic redundancy check (CRC) sequence scrambled with the RNTI for the TDD configuration information to the DCI; and
transmitting the DCI to which the CRC sequence is attached on a control channel based on the period for the DCI.
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Abstract
A method and an apparatus for transmitting and receiving Time Division Duplex (TDD) frame configuration information are disclosed. The base station transmits TDD frame configuration information as system information to a user equipment through a common control channel so as to dynamically change the TDD frame configuration according to uplink and downlink traffic conditions. The base station may deliver the same system information to all user equipments in the cell, removing ambiguity in User Equipment (UE) operations and avoiding interference. In comparison to an existing method of delivering TDD frame configuration information through system information update, the disclosed method enables user equipments to rapidly cope with traffic changes. In addition, user equipments may receive and apply TDD frame configuration information at the same time.
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Citations
22 Claims
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1. A method comprising:
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transmitting configuration information including a period for downlink control information (DCI) including time division duplex (TDD) configuration information; identifying a radio network temporary identifier (RNTI) for the TDD configuration information; obtaining the DCI including the TDD configuration information, the TDD configuration information indicating a radio frame structure including a downlink subframe, an uplink subframe and a special subframe; attaching a cyclic redundancy check (CRC) sequence scrambled with the RNTI for the TDD configuration information to the DCI; and transmitting the DCI to which the CRC sequence is attached on a control channel based on the period for the DCI. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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receiving configuration information including a period for downlink control information (DCI) including time division duplex (TDD) configuration information, the TDD configuration information indicating a radio frame structure including a downlink subframe, an uplink subframe and a special subframe; identifying a radio network temporary identifier (RNTI) for the TDD configuration information; receiving the DCI to which a cyclic redundancy check (CRC) sequence scrambled with the RNTI is attached, based on the period for the DCI on a control channel; and identifying the TDD configuration information based on the DCI. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A base station comprising:
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a radio frequency unit configured to transmit or receive a signal; and a controller configured to; transmit configuration information including a period for downlink control information (DCI) including time division duplex (TDD) configuration information, identify a radio network temporary identifier (RNTI) for the TDD configuration information, obtain the DCI including the TDD configuration information, the TDD configuration information indicating a radio frame structure including a downlink subframe, an uplink subframe and a special subframe, attach a cyclic redundancy check (CRC) sequence scrambled with the RNTI for the TDD configuration information to the DCI, and transmit the DCI to which the CRC sequence is attached on a control channel based on the period for the DCI. - View Dependent Claims (13, 14, 15, 16)
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17. A user equipment comprising:
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a radio frequency unit configured to transmit or receive a signal; and a controller configured to; receive configuration information including a period for downlink control information (DCI) including time division duplex (TDD) configuration information, the TDD configuration information indicating a radio frame structure including a downlink subframe, an uplink subframe and a special subframe, identify a radio network temporary identifier (RNTI) for the TDD configuration information, receive the DCI to which a cyclic redundancy check (CRC) sequence scrambled with the RNTI is attached, based on the period for the DCI on a control channel, and identify the TDD configuration information based on the DCI. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification